Which of the following scenarios could invalidate a will?

The scenario in which a will could be invalidated is when it is created by an individual who is not of sound mind. For a will to be valid, the testator must have the mental capacity to understand the nature of the act of making a will, the extent of their assets, and the claims of those who might have a right to inherit from the estate. If it is determined that the testator lacked the requisite mental capacity at the time of making the will, the document may be rendered invalid.

The presence of multiple beneficiaries does not invalidate a will; in fact, it is common for wills to include multiple beneficiaries. Similarly, the fact that a will is handwritten, as long as it meets the necessary legal criteria (such as being signed and witnessed appropriately if required), does not inherently invalidate it. Filing a will in estate court is a standard procedure in probate and does not affect its validity. Thus, the most critical factor that could lead to the invalidation of a will is the testator being not of sound mind at the time the will was made.